120311222220 has 144 divisors (see below), whose sum is σ = 421208843328. Its totient is φ = 27227404800.

The previous prime is 120311222203. The next prime is 120311222221. The reversal of 120311222220 is 22222113021.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 120311222193 and 120311222202.

It is not an unprimeable number, because it can be changed into a prime (120311222221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 345439 + ... + 599958.

It is an arithmetic number, because the mean of its divisors is an integer number (2925061412).

Almost surely, 2^120311222220 is an apocalyptic number.

120311222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120311222220 is an abundant number, since it is smaller than the sum of its proper divisors (300897621108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120311222220 is a wasteful number, since it uses less digits than its factorization.

120311222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945520 (or 945515 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 120311222220 its reverse (22222113021), we get a palindrome (142533335241).

The spelling of 120311222220 in words is "one hundred twenty billion, three hundred eleven million, two hundred twenty-two thousand, two hundred twenty".